I think this was 2021 or 2022 or so, not too long ago...

There was a keygen tool recommendation in mastering bitcoin that was maintained within libbitcoin. At some point, they replaced the (poor) entropy generator, because it could be relatively easily attacked, with a mersenne twister over timestamp (kinda means no entropy) and noted somewhere in the wiki help page to not use it.

However people did use it (after all it was a recommendation from the #1 bitcoin book) and got swept. Similar to this episode.